相关实验视频

Updated: May 7, 2026

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

Published on: June 27, 2014

通过增材制造技术生产的可生物降解元件可靠性的比较研究

Amged ElHassan¹, Waleed Ahmed², Essam Zaneldin³

¹Mechanical and Aerospace Engineering Department, College of Engineering, UAE University, Al Ain P.O. Box 15551, United Arab Emirates.

|March 13, 2024

概括

3D打印可生物降解部件的缺陷显著降低了完整性. 有限元分析和实验表明,应力集中在外表面,开始故障,无论角.

科学领域:

材料科学材料科学材料科学
机械工程机械工程
增材制造增材制造增材制造

背景情况:

3D打印的部件容易出现影响结构完整性的缺陷.
像PLA这样的生物降解材料越来越多地用于3D打印.
了解缺陷影响对于可靠的增材制造至关重要.

研究的目的:

调查缺陷对3D打印可生物降解部件机械完整性的影响.
将实验结果与有限元素分析 (FEA) 模拟进行比较.
分析完整和有缺陷的3D打印样本中的应力分布.

主要方法:

使用线性弹性有限元素方法 (FEM) 进行数值模拟.
使用可生物降解PLA的开源3D打印机制造的狗骨拉伸试验样本.
使用计算机辅助设计和切片软件进行了整合缺陷,测试了三种形角度.

主要成果:

带有零度格子方向的完整样本表现出最高的故障阻力和最小的延伸.
缺陷始终降低了样品完整性,反映了在完整样品中观察到的趋势.
在外表面,FEA揭示了更高的Principal,Max shear和Von Mises应力,这表明故障开始在那里.

结论:

缺陷严重损害了3D打印可生物降解部件的完整性.
外表面的应力度是导致故障发生的主要因素.
FEA为3D打印组件中缺陷诱导的机械行为提供了宝贵的见解.

关键词:

通过3D打印,可以实现3D打印.可生物降解,可生物降解.缺陷缺陷缺陷缺陷失败的失败失败的失败失败的失败可靠性的可靠性

更多相关视频

Stereolithographic 3D Printing with Renewable Acrylates

Stereolithographic 3D Printing with Renewable Acrylates

Published on: September 12, 2018

Direct and Indirect Culture Methods for Studying Biodegradable Implant Materials In Vitro

Direct and Indirect Culture Methods for Studying Biodegradable Implant Materials In Vitro

Published on: April 15, 2022

相关概念视频

Bioplastics

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...